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South Africa’s wool industry plays an important role in the agricultural sector. The wool industry provides a valuable source of income for farmers who practice sustainable farming practices. However, wool farmers face numerous challenges, such as wool contamination, dirty wool and producing good-quality wool. Good-quality wool is determined by fibre diameter, clean yield, vegetable matter and staple length. This study aims to address these challenges.

A multiple regression analysis of price (R/kg) of White wool and Merino wool was applied to four variables fibre diameter: vegetable matter, clean yield and staple length. The analysis was based on the data for the 2009–2019 data from Cape Wools auctions.

Fibre diameter, clean yield and staple length, with exception of vegetable matter, made a statistically significant contribution to the determination of wool price after all other independent variables were controlled for (p < 0.05). A one-unit (micron) increase in fibre diameter resulted in a 0.404-unit decrease in wool price (R/kg). A one-unit (mm) increase in staple length resulted in a 0.022-unit increase in wool price (R/kg). There was no statistically significant association between vegetable matter and wool price. A one-unit increase in clean yield was associated with a 0.111-unit increase in wool price (R/kg).

Since wool fleeces consist of the largest portion of wool shorn from sheep, it is important for wool farmers to focus on wool with low fibre diameter, high clean yield percentage, low percentage of vegetable matter content and good length of the wool.

Since wool fleeces consist of the largest portion of wool shorn from sheep, it is important for wool farmers to focus on wool with low fibre diameter, high clean yield percentage, low percentage of vegetable matter content and good length of the wool.

In a developing country such as South Africa, this study is important for the following reason. It is understanding the wool characteristics that have the most significance influence on the determination of wool price for Merino wool and White wool might effectively help the wool farmers to adapt their production systems to improve the wool characteristics that determine wool price.

This study identified a need for a study to be conducted on all wool classes.

This chapter investigates the political and economic contexts of the controversy about the causes of the increase of income concentration in Brazil during the 1960s. That was the most important economic debate that took place under the military dictatorship that ran the country from 1964 to 1985. The perceived sharp increase in income inequality posed a challenge to the economic legitimation of the military regime, which had by the early 1970s achieved high rates of economic growth. This chapter discusses the apparent paradox of relatively open economic debate during a period of political repression, as well as its international dimension as reflected in the role played by institutions such as the World Bank.

In this work, a new two-phase version of the finite element-based Artificial Compressibility (AC) Characteristic-Based Split (CBS) algorithm is developed and applied for the first time to heat and mass transfer phenomena in porous media with associated phase change. The purpose of this study is to provide an alternative for the theoretical analysis and numerical simulation of multiphase transport phenomena in porous media. Traditionally, the more complex Separate Flow Model was used in which the vapour and liquid phases were considered as distinct fluids and mathematically described by the conservation laws for each phase separately, resulting in a large number of governing equations.

Even though the adopted mathematical model presents analogies with the conventional multicomponent mixture flow model, it is characterized by a considerable reduction in the number of the differential equations for the primary variables. The fixed-grid numerical formulation can be applied to the resolution of general problems that may simultaneously include a superheated vapour region, a two-phase zone and a sub-cooled liquid region in a single physical domain with irregular and moving phase interfaces in between. The local thermal non-equilibrium model is introduced to consider the heat exchange between fluid and solid within the porous matrix.

The numerical model is verified considering the transport phenomena in a homogenous and isotropic porous medium in which water is injected from one side and heated from the other side, where it leaves the computational domain in a superheated vapour state. Dominant forces are represented by capillary interactions and two-phase heat conduction. The obtained results have been compared with the numerical data available in the scientific literature.

The present algorithm provides a powerful routine tool for the numerical modelling of complex two-phase transport processes in porous media.

For the first time, the stabilized AC-CBS scheme is applied to the resolution of compressible viscous flow transport in porous materials with associated phase change. A properly stabilized matrix inversion-free procedure employs an adaptive local time step that allows acceleration of the solution process even in the presence of large source terms and low diffusion coefficients values (near the phase change point).

The purpose of this paper is to focus on the numerical analysis of transient free convection heat transfer in partially porous cylindrical domains. The authors analyze the dependence of velocity and temperature fields on the geometry, by analyzing transient flow behavior for different values of cavity aspect ratio and radii ratio; both inner and outer radius are assumed variable in order to not change the difference r_o-r_i. Moreover, several Darcy numbers have been considered.

A dual time-stepping procedure based on the transient artificial compressibility version of the characteristic-based split algorithm has been adopted in order to solve the transient equations of the generalized model for heat and fluid flow through porous media. The present model has been validated against experimental data available in the scientific literature for two different problems, steady-state free convection in a porous annulus and transient natural convection in a porous cylinder, showing an excellent agreement.

For vertically divided half porous cavities, with Rayleigh numbers equal to 3.4×106 for the 4:1 cavity and 3.4×105 for the 8:1 cavity, the numerical results show that transient oscillations tend to disappear in presence of cylindrical geometry, differently from what happens for rectangular one. The magnitude of this phenomenon increases with radii ratio; the porous layer also affects the stability of velocity and temperature fields, as oscillations tend to decrease in presence of a porous matrix with lower value of the Darcy number.

A proper analysis of partially porous annular cavities is fundamental for the correct estimation of Nusselt numbers, as the formulas provided for rectangular domains are not able to describe these problems.

The proposed model represents a useful tool for the study of transient natural convection problems in porous and partially porous cylindrical and annular cavities, typical of many engineering applications. Moreover, a fully explicit scheme reduces the computational costs and ensures flexibility.

This is the first time that a fully explicit finite element scheme is employed for the solution of transient natural convection in partially porous tall annular cavities.

This paper reports a study of recidivism rates following psychodynamic psychotherapy amongst male offenders with intellectual disabilities. The recipients were 18 men who had been diverted to the clinical psychology service for adults with intellectual disabilities from the criminal justice system. Thirteen participated in treatment and five refused it during assessment. Participants were followed up for 4 years after treatment. Of the 13 who completed treatment two re‐offended. All five of the men who refused treatments re‐offended. In view of the preliminary nature of these findings they are discussed in relation to methodological issues and future research.

This case allows students to engage with classical marketing tenets of branding, media and communications decisions and content marketing within a management framework.

This case is appropriate for an undergraduate or graduate-level programme in marketing management.

Suzanne Stevens was part of a group of four former senior employees of a large life insurance firm that decided to establish a new and innovative South African insurance company, BrightRock. They identified a gap in a large and highly competitive (albeit generic and opaque) insurance market and developed a distinctive positioning within the market. There was low consumer understanding of the technical aspects of life insurance products, and no existing life insurance product provided an individualized offering. Stevens developed the company’s brand and marketing strategy by drawing on reputation drivers, traditional advertising and a content marketing approach. BrightRock focused on change moments in consumers’ lives, including getting married, having children or getting a new job, and changed the standard insurance product model by launching an individualized flexible product that could adapt with the consumer through their various life stages. The case study documents the first three years of BrightRock’s operations, with a strong focus on brand and product development, distribution and communication. The case dilemma involves choices Stevens faced at the beginning of 2015 about marketing investments across paid, earned and owned media.

This study enables to critique the development of a services brand; integrate paid, owned and earned media to increase communication effectiveness and efficiency; and critique a content marketing strategy.

Teaching Notes are available for educators only. Please contact your library to gain login details or email support@emeraldinsight.com to request teaching notes.

CSS 8: Marketing.

To improve our understanding of the impact of organizational learning and knowledge on competitive advantage, we propose a framework that includes the constructs of data, information, knowledge, and wisdom. Each of these constructs is then associated with a different type of learning. We further argue that wisdom is an important, albeit missing, construct in the knowledge‐based theory of the firm. A key to organizational wisdom is judgement and decision making, which requires an understanding of the complexity of a situation, but also requires the ability to make sense and simplify so that action can be taken. Three important drivers for the development of organizational wisdom are experience, a passion to learn, and spirituality. Processes for acquiring organizational wisdom such as transformational leadership, organizational culture and knowledge transfer are also discussed.

Graduates are expected to possess the knowledge and right skillset, commonly known as graduate attributes, which they need to become employable and work-ready. This study describes the approaches that were employed by an academic institution in developing an assessment framework for measuring the student achievement of the graduate attributes and learning outcomes.

It used thematic analysis in analyzing the 43 audit reports of higher educational institutions (HEIs) in Oman which have undergone the regional quality audit as well as the outcomes of the institutional standards assessment.

The analysis exposed the critical issues necessary for embedding graduate attributes and learning outcomes in higher education. Likewise, the study revealed that the assessment of the graduate attributes (GAs) and learning outcomes (LOs) is the area that garnered the most number of comments from the audit panel, and 69 per cent of the HEIs are still problematic in this area. Moreover, most of the HEIs in Oman lack the mechanisms to assess student learning as evidenced in the regional accreditation outcomes. Only 43.8 per cent of the HEIs, which have undergone the institutional accreditation process, have garnered a Met Rating in the Graduate Attributes and Student Learning Outcome criterion. Hence, this study presupposes its high relevance and usefulness to the work in this area, drawing from the experience of an HEI in Oman.

This study will present the relevant and meaningful content, especially good practices and potential gaps that inform HEIs regarding the current trends, policies, and practices relevant to the assessment of graduate attributes and learning outcomes in higher education.

This study extends the limited literature on the assessment of graduate attributes and learning outcomes, especially among the HEIs in Oman.

Effective procurement of infrastructure is linked to the attainment of the sustainable development goals set by the United Nations. While the capacity of organisations is generally thought to be related to organisational performance, there is a lack of empirical insights concerning the contribution of procurement capacity of public organisations towards the attainment of procurement objectives in infrastructure procurement. Thus, it is unclear which aspects of the capacity of public procurement organisations contribute the most to the attainment of procurement objectives in the procurement of infrastructure. This research sought to address this gap.

The research used a survey of public procurement professionals which yielded 590 responses.

Exploratory factor analysis of 23 organisational capacity items revealed three components of organisational procurement capacity: “management of the procurement process”; “human and physical resources”; and “financial resources and management”. Multiple regression modelling of the relationship between the components and the attainment of 12 procurement objectives further reveals that there is a significant positive relationship between the three components and all the objectives. However, “management of the procurement process” emerged as the greatest contributor to the attainment of seven objectives, whereas “human and physical resources”, and “financial resources and management” were the greatest contributor to the attainment of one objective and four objectives, respectively.

The study provides strong empirical justification for investment in the development of procurement capacity of public agencies involved in procurement of infrastructure. Furthermore, procurement capacity development of specific capacity components can be prioritised based on the relative contribution of capacity components to the attainment of desired procurement objectives. This should be useful to government policymakers as well as multilateral organisations that fund infrastructure and procurement reforms in various countries.